rice products contain a troubling amount of arsenic, known to cause cancer. >> consumers should take steps to moderate consumption. >> reporter: 50 rice products had contained the levels. arsenic is linked to several types of cancer, including lung, skin and bladder cancer. nobody is saying zoo eat rice -- don't eat rice, at least not yet. >> these are low levels. >> reporter: but because children, especially babies are vulnerable, parents should cut their intake. >> we are saying for infant rice cereal that you shouldn't exceed more than one serving a day. >> reporter: when it comes to arsenic, the less healthy white rice is better than brown. that's because the outer layers are partially removed.